There were rumors of a rapist. There was a girl in jeans outdoors, in a park or mountain. She was about 18. She realized that a man was following her.
She had heard about the rapist so she was scared trying to escape. I think she hides and waited for him and hit him in such a hard way that she thought he was dead. Then she ran away... found a policeman and told him what've just happened. She was crying and grabbed him, and hugged him.
The policeman hugged her and tried to calm her with words. She was crying while repetitively saying that she had killed the man. The policeman was talking to her while rubbing her back. Slowly, he began to rub her ass... so she released and began to run.
He knocked her down on the ground. He was keeping her on the ground with one hand and with the other hand he was unfastening the belt of her jeans. She had her hand pushing on his chin very hard. Suddenly the man dropped down dead or unconscious.
In front of her was, with a heavy wooden stick in his hands, the first man (the one supposed dead). He explained to her he was a detective investigating the rapist rumors.
I watched this movie here in Venezuela in the early 70's. It seemed to be a 70's movie.